Apparatus for determining the depth of liquids.



J. W., JONES. APPARATUS FOR DETERMINING THB DEPTH OF LIQUIDS.

APPLIUATION FILED DEG.13`,1906.

Patented. May 3 3, 19M

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AIQSLELTS FOR. DETERE-NNG- THE DEPTH OF LIQUIDS.

Application. filed recemher 13, .1;9015. Serial. No. 347.676.

To all 'whom may coo/cern.' l

Be 1t Knows, that Jossrrr rl-TILLIAM JoN;ss citizen the United States of America, e resident ci" New uo'rli city! a tion end will be termedfthe branch duct. H

New York, have invented new :md useful lmp rovomerit 11i .ity igor leliermimng Deoth olf hier? rrioroveirieiit is ull'4r forth. 'n .o he s cciicstion. he princroel p'orpo my invention to indicato the @marit/ity ol' gssclf of so tot Course .it n he ias-srl for fle amount ol hind of 'L used is en The invest-ion Selene in the .ough ot invest-ion. ,f Valve.

le oddly io lloro-loe' to the bottom or the took, o5 "vressore, it col umn of the liquid to he rofl and deter-- milling the 'depth of che column by measur- 'mbr that pressure; consistsispecicolly in employing e pressurwgoge in. connection with o source of pressure (es the exhsust of the automobile engine), and io lowing 'the pesssge- Wsy or rluet hetsseen the two .pro vided. with so autr tic liio'sol'i (ci` surety Valve) 'which consists ci column el the gssw lens or other liqoif to he measure-1l, so lhs l ellthe pressure shove cer-mio itirrouot will. there-,hy escopearicl not he recorded by the pressure gage, sod. the annimmt Wl'ich is recorded corresgoricls exactly with the quamtity or amount of the O'ssolehe the tank.

The invention will host understood by reference to the accompanying drawings, in which ,Figure l is s diagrammatic View of ports illustreting the weritioo. es applied, to, zur

lotter shown iii dottori lines;

automobile, the l and. Fig'. I? is a de sil of e modiicstioo.

A represents the gesolene-tcnl-, the exi locust ofthe engine, :uid C represents the pressuregcge as c whole. prises, as one form, e (lisphrcgm-bcllows D that is connected to the pivoted pointer l, So that inflation olf the hellows causes the pointer to pass over the gliel-loco; the rlich.

This latter com-YK Specicaboza. of .Letters Betent.

Patentes May 1s, 190e.

to es the msinduct. G is e duct, preferably similar copper tube, leading from the duct F----l3" to o point. very near the bottom of the teni; L lt is preferably in s vertical posirepresents e cover by which the orifice-of took ,A ma); he hermetic/illy closed Whole flesh-ed. l is another duct, which may he similar to the .main ond branch ducts, lez` l" se Y" s, Joint .neer 'the 'top 0l' tank A to tl e ,iricloseo space K. lt provided with the stop-cock or valve 5, and will he to the secondary duct. l

The so'verli. may he loi` iene will he under, `stmospheric rvressure only, or 'the cover he closed tight and `fessure spplied to the gasolerie, es desired. Qur present sppsrots is designed to operate ouder either condition. When the @over il is open thestop--coclr J will lie closed to cut oil comnlurlicavtion between the tank and the spec@ K. Assume that the weight of the liquid to be measured, for o column l foot higll, is lpourid per square inch, then the Weight of s column feet high would he 2 pounds oer square inch! ete. ming; that the ges@ elle .in the took; reaches to the level o, which is just 3 loot shove thel orirlce gol the branch duct' G, then if 'the pressure et the exhaust B he anything short or" 3 pounds per t epee ami the Y. I'

will he forced down, but not entirely to the bottom of the duct, While the pressure t'l'iroughout the spore consisting ol' l1`-F D.G- will everywhere the some, something short on. 3 pounds per square inoh. lf

.the pressure reaches to, and stands constant at exactly 3 'x:our1ds, then the column of,

liqoiclA will he clriver. entirely out of drlctNGf and no more. And, as soon as the pressure exceeds 3 pounds per-square 1nch,`a ll the excess willpass out through the body of the li( uid in' the tank and escape throughth'e`v orifice at H; but the pressure throughout the v aoc l`-`--G--li"-D will renmin. everywhere t ie same-exactly 3 pounds-per square inch and the pointer Will indicadas this amount Upon the (hablarte, either .by showing 3 reet or the amount of liquldfas may be preferred., or hoth.` Whenfthe level of the gssolene is lowered, (say) l loot, or to o', theo the welgl'it of the column contained 1o' the duct G will be only 2 pounds per square inch 3 the maximum vPressure throughout the pressorespsce is on y 2 pomrds per' squere` passing out as before, at the orifice H. rFhus,

the valve J opened.

Whatever be the depth of liquid in the tank,

the amount of pressure required to empty the duct G will be indicated by iointer E, and all the rest of the pressure will pass out into the atmosphere.

If it be desired to employ pressure upon the gasolene, the orifice -l-i will be closed and The pressure from the exhaust B extends into ducts F--F-G as before; and as before the pressure exerted inside of bellows D cannot exceed the amount of pressure required. to empty the duct G,- because when the pressure from the exhaust is greater than is necessary to Lempty column G, the excess bubbles up through the liquid into the space in the top of the tank, thence into the casing-ii. As this excess continues to pass through', there is created in space I-K a back-pressure, which is exerted upon the surface a of the liquid in the tank (and also upon the outsideor reverse-*of bellows D). As this back-pressure increases, the amount of the origin al pressure necessary topass through the duct Gr is increased by the same amount. Thus, assuming a pressure at cxhaust B of 10 pounds per square inch (these figures are given only for the sake of illustration), and assuming that'ctheiy is 3 feet of gasolene in the reservoir, wi'iich weighs 1 pound per square inch per fo'ot deep,-then in the beginning there will. be a pressure on theinside of bellows l) amounting to pounds and the excess of pressure will be'passing through d uct I into spacelii. ,When this excess exerts a back-pressure on the surface of the reservoir amounting to (say) 1 pound per square inch, then it will require a pressure of 4 pounds'per square inch to force its way through duct G; consequently there is a pressure of 4 pounds per square inch on the Inside of the bellows l), and a counter-pressure of 1 pound per square inch on the outside; so that the netesult is a distending of the bellows to an extent of only pounds. And so on for any pressures, original or back g the net result, or d iilerence between such original pressure and such back pres-' sure, will be .precisely the amount normally required to kein ty column CT; and precisely this amount w' l tie-indicated by 'pointer li).

Fig. 2 shows a modified form lof )ressuregage, consisting ol' a U-shapedptu e M ol glass, containing a colored liquid N and having graduations calibrated thereon as at m, C) is a duct corresponding to duct F in Fig. 1, and P is a duet corresponding1 to duct l in Fig. 1. The `pressure required to empty the column G will be registered by forcing the i liquid downward 'on the right side of tube ceases M, thereby causing it to rise on the left hand member thereof Where the indications may be read. If the gasolene be under pressure, the valve J in duct P will be opened, and the operation ofthe gage is obvious.

@ther forms of pressure-gages may be employed as found convenient. If the tank A be rectangular, the amount of liquid contained wil. vary directly as the de th and the dial-face may be calibrated to s ow both depth of liquid in feet and inches and quantity of liquid in gallons etc.; but if the tank be of some vother shape the quantity may not vary directly as the depth, yet the dial-face may be calibrated to' indicate the quantities I for the )articular tank used. The tank A may be ocated Wherever convenient, while the pressure-gage will be lacedwherever desired, preferably on the ashboard. It is obvious that there is the utmost iiexibility in the arrangement and location of the parts oll the invention.

Having thus described my invention, I claim: .l

1. Thel combination with a tank containing a liquidto be measured and having aremovable air-tight closure, a pressure gage, an air-tight casing surrounding the same, and a source of pressure, of a continuous duct leading directly from saidsource of pressure to said gage, a branch duct leading from said main duct to the bottoni of said tank, and a valve-controlled secondary duct leading from the top of said tank-(to said casin 2. In -combination, a liquid fuel supp y tank for self-propelling vehicles, a difierenconduit connectir'ig one of said compartments,

with said tank near its bottom, and adapted to connect with the engine exhaust, and a conduit connecting said second compartment with the space above the liquid in said tank.

In testimony whereof I have signed this specification in the presence of two subscriblng witnesses.

f Josnrn WILLIAM JONES.

Witnesses: y

C. A. L. Massin, R. L.. Sco'r'r. 

